Shuttle eye



Aug. 12, 1930.

.H. F. ADAMS 1,772,446

SHUTTLE EYE Filed Feb. 6, 1928 I l l Patented Aug. 12, 1930 nently open channel leading laterally intothe a: UNITEn'sTAT-Esi ISLAND This invention pertains to loom shuttles and moreparticularlyjto a shuttle eye of selfthreadingtype. Shuttle eyes of this type are generally characterized by having a permalongitudinal yarn passage'in order. to permit free entrance of the yarn duringthethreading operation. During the flight 'of the shuttle, the yarn is drawn olf from the end of the bobbin and swirls or balloons under the action of centrifugal force, and unless restrained,

. sometimes slips out through the open entrance channel, leaving thelshuttle unthreaded f In one common type of-self-threading shuttle eye, a curved horn or arm is arranged to over-, hang the longitudinal yarn passage in such a manner as to restra n yarn swirlingor bal 1 looning in one direction and to prevent-it from escaping from the lateral entrance channel. Usually this armor horn is designed to cooperate with yarn drawn from abobbin of normal vWind and is not efiective to prevent.

' escape. of yarn swirling-or ballooningin the opposite: direction, as when drawn from i a bobbin of reverse wind. Thus when reverse- 1y wound bobbins are substituted for normally wound bobbins, frequent unthreadingiof I have provided an imsimple and .eflicient guard member which does notin any way interfere which effectively prevents escapeof reversely wound yarn from the yarnipassage.

In the accompanying drawings, I have il-' lustrated one desirable embodiment of the present invention wayfo f example, and in V Fig. 1 is a fragmentary plan view showing 2, 1S a lee amass draw im roved .in the recess 4 by meansof theusual retain- In accordance with the;

P T'ENT'IOFFIC HAROLD FRED ADAMS, 0F rnovrnnnon, snobs-ISLAND Assrelvon T0 uq-s. BOBBIN & SHUTTLE COMPANY, or PROVIDENCE, RHODE ISLAND, A CORPORATION or RHODE' I SHUTTLE EYE 5is a section substantially" on the line F igs. 6. and 7 arediagrams illustrating the mode of operation ofthe old and new. constructions, respectively The shuttle body 1, which may be titted orany other suitable material,1is tapered in u sual mannerat its forward end Qfand is furnished'with the bobbin cavity} and with a recess f for the reception of'the shuttleeye' i gnated generally by the numeral 7, is secured ing bolt.

ing the present inventionisshown as o'f insuch as brassor bronze. Although here illustrated as a casting, it is contemplated that .itmay be made of sheet material suitably bent to shape, or that it'may comprise a plurality of; independently shaped parts united in any desired manner. This shuttle eye prefnally extendingyarn guiding c anne'l 9. j A

wall-1 0 extends upwardly in a substantially vertical directionat onerside of the channel perpart of the wall 10andQoverhangsthe with :the shuttle. threading operation, but yarn passage. :Atapoint inter Q Lfi S d Theshut-tle eye here illustrated as embbdyerably comprises a base member having a c concave upper surfaceprovidingla longitudlso 9. top membervll projects, from {the upthis'top member is-providedwith depending arm or hornlfl. The under sides of themembers ll and- 12 form a smoothlyc urved ClQWIl-w wardlv; concave thread guiding surface. 1

.TheloWerxend 13 of'the hornfl2 is spaced above the outer edge 14015 the base member 8' 1 but inwardly of themouteri edge of "the yarn and is also preferably disposed jadjaoentf to guiding channel 9 in the base; This arrangethe threading operation. As shown infFigLl,

so as to leave ample room for the yarn to move downwardly'over thecurvedouter surface of .the born .12 ,is spaced from the shiittle body [The bobbin 6 is mounted in the bobbin cavity." in any usualmannerand the shuttle eye,ydesitlmart. LWhena shuttle-eye of the-kindjust ipreferred ito :is employed with a bobbin of normal Wind, the yarn swirls or balloons in the direction indicated by the arrow 18; in-Fig.

6, and in thus moving is restrained by the inner surfaces of the parts '8,1'0 and i12ofithe 15 shuttle eye so that it does not escape outward- "ly' and-upwardly throu h the passage 15. However if such an eye be employed'with a "bobbinof reverse wind from which the yarn swirls or balloons in the direction of the ar- "5 row 19 in Fig. 6, the parts do not effectively restrain the'yarn which tends, while moving upwardly in its circular ,through the channel '15.

7 To avoid-this latteraction, my improved shuttleeye comprises-a guardpost 20 extending upwardly from the base member 8, preferably at the rear end of thefllatter and at the 'l'eft han'd side of the yarn passage as viewed inf'FigQ i. Thispost is 'preferably'provided witha concave inneredgeor surface2'1 which F said opening.

extends upwardly to the point 22 where it is spaced sufliciently' from the inner surface of the wall 10 to provide a narrow passage 23 for the entrance zoif'the yarn. 'The upper-end. 24 of the post 2O is preferably inclined ininr'earflthebdttom of the yarn passage, said horn hav'ing a concave inner surface engage- "able with yarn ballooning 'in "one direction to 'wardly and downwardly toward the opening -23'to assist in guiding the yarn into thelatter opening.

7 As indicated-inFig. 4, the inner surfaces of 40 th parts8, 10 and '12 define apassage of generally oval contour having the narrow en- I having -a concave inner surface engageable trance opening 23'at' its upper end. The surface 21 of "the post .20is preferably disposed f-slightly to the right, as viewed in Fig.4, of

fthe'lowerpartof thehorn 12 and terminates V [at a point well above the lower end 13 of the horn. V The post 20 may be "integral with the base'8jor made'asa separate part and secured in position in-any' desired-manner. jI'n threadingithe shuttle, the yarn is drawn down into contact "with the inclined surface 24 of thepost 20 andis guided by said surface intofthe opening .23. "The yarn drops "freely v provided with a longitudinal yarn-guiding v through this fopening and then engages-"the 7 l1p ,per surface'ofthe'horn 12 and follows the "flatter'downinto the lateral entrance 15 lead ing into the longitudinal yarn passage. If .the bo'bbinbe of normal wind so "that the yarn 'balloons' i'n the direction of the-arrow 18, (F 7) it is restrained from escaping .throug'h the lateral entrance opening by en- ,gagement'with'the'concave surface 21 .of the [guard post 20 and also by thefaction of the 'horn 112 as above described. Onthe other "han'ch'if a reversewound bobbin beemp'loyed ofother types. path, to escape preventing escape of reversely wound yarn fromathe shuttle eye, .while it assistsin preventingyarn of normal wind fromes caping. T perfer to retain the horn 12. -dY-hile I have here shown the guard post 20 as at the extreme rear end of the shuttle eye,

I'IY.CQI1tCIIIP1atGI ElIat lit might be otherwise positioned, and while I have shown it as embodied in a shuttle eye of -a certain definite type,-I*wish itto be understood'thatthwbroad principle of the'present 'invention 'is not limite'd to applicationto aspecific =form ofshutt le' 'eye, 1 but-may be' embodied in shuttle 1 eyes;

1* claim: A 1. fA self-threading shuttle eyeof the kind having a longitudinal yarn-passageprovided *with anen'trance opening along one side 1 andiii alongthe top and =mean's to prevent yarn balloon1ng inkone direction from escaping from 'saidfoperiing, said *shuttle eye comprising guard means tvpreverit yarn ballooning in the oppositedirection fromescaping through:

52. A- =selfthreading:shuttle eye ofthe kind ha'vhiga longitudinal yarn passage provided prevent the yarn from esoaping from the entrance opening,"said shuttle eye comprisingaguard upstanding from its lower part and with yarn ball'oo'n'ing in the opposite :direc- "tion 'to'prevent its escape through the tentranceopening, the horn and the guard being c, so-arrangedthat their respectiv'e'end portions extend outwardly beyond the concave :inner surfaces which are engageable with yarn-during 'ballooning thereofywhereby the concave inner surface :of zone of :these members may .SGLVG'itO restrain yarn from passing over the endportion of the other ofithese members.

3. 'Asshuttle eyeof-the kind having a base minating at a point above and'inwardly of the point of the horn and outwardly of the inner surface of the adjacent portion of the horn, whereby said adjacent surface may cooperate with the concave-inner face of the guard for preventing escape of yarn ballooning in either direction.

4. In a guide of theclass'described, the combination of means providing a longitudinal passage having an open side, means for restraining thread in the passage comprising longitudinally spaced and oppositely inclinside and having their free ends arranged to engage the thread and to direct the same'into the passage. c

6. The combination as set forth in" claim 1 wherein the arms intersect a common longi tudinal element of the passage and the portion of each arm between the common element and the respective top and bottom walls tends to restrainthread within the passage while the remaining portion of one arm serves to direct thread into the passage.

7 In a guide of the class described, the combination of means providing a longitudinal passage having bottom, side and top walls and an openside, and longitudinally spaced and oppositely inclined arms extending from the top and bottom walls respectively andtraversing the open side, the free end of each arm being disposed outside of the inner surface of the other arm for engaging thread and guiding the same into the passage, the inner surfaces of the respective arms being arranged to intersect a common, longitudinal element of the passage, and the free end of one arm having an oblique surface for guiding thread to the inner surface of said one arm.

8. The combination as set forth in claim 7, and means orov'iding'another surface for cooperating with theoblique surface for directing thread into the passage. c 9. The combination as set forth in claim 5', wherein the inner surface of the bottomwall is concave and of greater breadth than the top wall and the arm, depending therefrom, whereby the :outer surface of the top; wall 5, wherein the inner surface of the bottom wall is broader than the top wall and the arm which depends therefrom and the outer surface'of the top wall and the arm which depends therefrom is a smooth continuous convex surface adapted to direct thread within the bottom wall.

Signed by me at Providence, Rhode Island this 28th day of January, 1928.

HAROLD FRED ADAMS. I

and. of .thearm which depends therefrom" 1 may serve as a guide for directing thread within the concave inner surface of the bottom wall;

10. The combinationas set forth claim CERTIFICATE OF CORRECTION.

Patent No. 1,772,446. Granted August 12, 1930, to

HAROLD FRED ADAMS.

It is hereby certified that the above numbered patent was erroneously issued to "U. S. Bobbin & Shuttle Company, of Providence, Rhode Island, a corporation of Rhode Island", whereas said patent should have been issued to "U. S. Bobbin & Shuttle Company, 1929, of Providence, Rhode Island, a corporation of Rhode Island", as assignee of the entire interest in said invention, as shown by the records of assignments in this office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23rd day of September, A. D. 1930.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

